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from 2c7bf8036df [aarch64] Use wzr/xzr for assigning 0 to vector element. new 76f44fbfea1 dse: Use SUBREG_REG for copy_to_mode_reg in DSE replace_rea [...] new ade0a1ee5c6 tree-vect-patterns: Improve __builtin_{clz,ctz,ffs}ll vecto [...]

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Summary of changes: gcc/dse.cc | 14 +++- gcc/testsuite/gcc.dg/vect/pr109011-1.c | 48 +++++++++++ gcc/tree-vect-patterns.cc | 148 +++++++++++++++++++++++++++------ 3 files changed, 184 insertions(+), 26 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/vect/pr109011-1.c